Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Speedometer Module: Testing and Inspection

Enter test mode by holding the TRIP RESET button IN and turning ignition from OFF to RUN. Advance through tests by successively pressing the TRIP RESET button. A steady tone and a P on speedometer display indicates that the test passed. No tone and an F on the speedometer display indicates the test has indicated a failure. Failure to pass the self test does not necessarily indicate module failure. Refer to the comments column to determine if the module needs to be replaced. The test number is indicated on the tenths digit of the odometer. Exit test mode by completing watch dog test or turning ignition OFF.

TEST 1 - 4

Speedo/Odo Self-Test:






TEST 5 - 8

Speedo/Odo Self-Test:






TEST 9 - 10

Speedo/Odo Self-Test: